User's Guide
SLVU670A–March 2012–Revised May 2012
TPS62090EVM-063 Evaluation Module
This user’s guide describes the TPS62090 evaluation module (EVM) and how to perform a stand-alone
evaluation or interface with a host or system. The TPS62090 is a step-down converter that operates with
an input voltage between 2.5 V and 6 Vdc, an output voltage of 1.8 V using external resistors, and can
deliver up to 3000 mA of continuous current. The converter has a programmable soft-start, a power-out
good status, and several other safety features. See the data sheet for the complete description.
Contents
1
2
3
Introduction .................................................................................................................. 2
Considerations When Evaluating the TPS62090 ....................................................................... 2
Test Summary ............................................................................................................... 2
3.1
3.2
3.3
Equipment ........................................................................................................... 2
Equipment and EVM Setup ....................................................................................... 2
Test Procedure ..................................................................................................... 3
4
5
Waveforms ................................................................................................................... 4
Schematic, Printed-Circuit Board, and Bill of Materials ................................................................ 8
5.1
5.2
5.3
Schematic ........................................................................................................... 8
Printed-Circuit Board Layouts .................................................................................... 9
Bill of Materials .................................................................................................... 10
List of Figures
1
EVM Schematic and Evaluation Setup...................................................................................
Typical Switching Waveforms .............................................................................................
Typical Switching Waveforms .............................................................................................
Low-Power Mode, 25-Ω Load – Shows Burst Low-Power Mode ....................................................
Power Up by Powering Laboratory Supply Connected to Vin ........................................................
Power Up by Hot Plugging Vin............................................................................................
Power Up by Enable Pin Pulled High ....................................................................................
Power Down by Enable Pulled Low ......................................................................................
Assembly Layer .............................................................................................................
Top Layer ...................................................................................................................
3
4
5
5
6
6
7
7
9
9
2
3
4
5
6
7
8
9
10
11
Bottom Layer .............................................................................................................. 10
List of Tables
1
2
Setup I/O Connections and Configuration for TPS62090EVM Evaluation ..........................................
PWR063A Bill of Materials .............................................................................................. 10
2
1
SLVU670A–March 2012–Revised May 2012
TPS62090EVM-063 Evaluation Module
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Copyright © 2012, Texas Instruments Incorporated
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